When I was just getting started, I loaded some 6mm Rem cases for a friend, using the charge of H380 he provided. On about the 4th round suffered a total head separation but fortunately the M700 rifle was able to handle it. He had blowback gases in his face, but other than that, no harm was done. We never did determine if it was his load that was unsafe or if I screwed it up somehow.
Just recently I loaded 50 pieces of 30 Carbine with small pistol primers, instead of small rifle. I shot a few of them, expecting blown primers but I guess because the load I was using was a medium charge weight, nothing went wrong. All 50 rounds fired w/o incident. It was still a silly mistake and I've now added a step in my process to double-check the primers before they go in.
Just recently I loaded 50 pieces of 30 Carbine with small pistol primers, instead of small rifle. I shot a few of them, expecting blown primers but I guess because the load I was using was a medium charge weight, nothing went wrong. All 50 rounds fired w/o incident. It was still a silly mistake and I've now added a step in my process to double-check the primers before they go in.